Some other things you can do to explain why it is tight
1 - Measure the the main cap bore with no bearing, if that spec is tight, the bearing will tighten up
2 - Get comfortable with the mike standard, and then use the same amount of "pressure" when tightening the mike to the crank. By knowing the feel that the standard gets you to the proper number, you can tell if maybe you aren't tightening the micrometer enough on the journal. I have one set that if I just use the ratchet it always feels loose to me.
3 - Just checking but, when you measure the journal, it really doesn't matter what it measures, although it's good info, just put the micrometer in a vice lightly or use a special stand to hold them to zero the tool. The stand works better and is kinder to tools. Be gentle when handling the micrometer after measuring and locking the barrel and setting up. then set the bore gauge to zero, can't rush the zero setting, the more you do it, the more accurate you will be, all it takes is to be a bit off and your measurement is off
I typically do not see FE aftermarket cranks that tight very often, but we hit them with a polish after balancing. That being said, the big jump on one of yours could be from error, goofy main bores, or a combination of things
As far as bearings no rules, but I have seen FMs to be a little looser, Clevites to be exactly what they say, and the same with TRW. I haven't used enough Kings to have an opinion, the last set I got sits on the shelf, they were .001 bigger rod bearings that I thought I bought .001 smaller....they measured exactly what they said
I just ordered the wrong things LOL